Originally Posted by
martysmartie
I would first check the CTS, these can go wildly out of range. An easy way of telling is to measure the resistance, the resistance decreases as the temperature increases, if you have a very high resistance then it's faulty!
Martin
And for that, you need a scale/reference, and a thermometer to determine what the coolant temp actually is
Temp 'C Resistance
-40 - 100950
-30 - 53100
-20 - 29120
-10 - 16600
0 - 9750
10 - 5970
20 - 3750
25 - 3000
30 - 2420
40 - 1596
50 - 1080
60 - 746
70 - 526
80 - 377
90 - 275
100 - 204
110 - 153
125 - 102